[Holmes has been firing a gun into the wall]
Dr. John Watson: Permission to enter the armory?
Sherlock Holmes: Granted.
[He fires again]
Sherlock Holmes: Watson, I am in the process of inventing a device which muffles the sound of a gunshot.
[He yells in pain as Watson opens the curtains, letting sunlight into the room]
Dr. John Watson: It's not working.